US2023240954A1PendingUtilityA1

Use of anthraquinone dyes and of fluorescent dyes for dyeing keratin fibres, dyeing process and composition

Assignee: OREALPriority: Dec 22, 2016Filed: Dec 21, 2017Published: Aug 3, 2023
Est. expiryDec 22, 2036(~10.4 yrs left)· nominal 20-yr term from priority
A61K 8/355A61K 8/466A61Q 5/065A61K 8/4926A61K 2800/434A61K 8/49A61K 2800/432
44
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Claims

Abstract

Use of anthraquinone dyes and of fluorescent dyes for dyeing keratin fibres, dyeing process and composition. The present invention relates to a process for dyeing keratin fibres, in particular human keratin fibres such as the hair, using a) one or more particular anthraquinone dyes and b) one or more fluorescent direct dyes; to a composition comprising a) and b). The present invention also relates to a multi-compartment device containing the compounds defined above.

Claims

exact text as granted — not AI-modified
1 .- 27 . (canceled) 
     
     
         28 . A process for dyeing keratin fibers, comprising applying to the keratin fibers ingredients (a) and (b) below:
 (a) at least one anthraquinone dye chosen from the compounds of formulae (I) and/or (II) below, optical isomers thereof, geometrical isomers thereof, tautomers thereof, solvates thereof, or mixtures thereof:   
       
         
           
           
               
               
           
         
         wherein in formula (I) or (II):
 X a , which may be identical or different, represents a bond, a heteroatom or a group chosen from an oxygen or sulfur atom, N(R a ), CO, SO, SO 2 , or combinations thereof, with R a  representing a hydrogen atom or a (C 1 -C 6 )alkyl group optionally substituted with one or more hydroxyl groups; 
 Y represents: i) a hydrogen atom; ii) an alkali metal; iii) an alkaline-earth metal; iv) an ammonium group: N + R a R b R g R d  or a phosphonium group: P + R a R b R g R d  with R a , R b , R g  and R d , which may be identical or different, representing a hydrogen atom or a (C 1 -C 4 )alkyl group; or v) a thiol-function protecting group; or vi) the group (III) below: 
 
       
       
         
           
           
               
               
           
         
         
           R 1 , R 2 , R 3 , R 4 , R′ 1 , R′ 2 , R′ 3  and R′ 4 , which may be identical or different, represent an atom or a group chosen from:
 hydrogen; 
 halogen such as bromine and chlorine, 
 hydroxyl, 
 C 1 -C 4  alkoxy, 
 hydroxysulfonyl (—SO 3 H) or sulfonate (—SO 3   − , M + ), with M +  representing a cationic counterion; 
 optionally substituted C 1 -C 6  alkyl, 
 —NR 5 R 6  in which R 5  and R 6 , which may be identical or different, represent an atom or radical chosen from: i) hydrogen, ii) (C 1 -C 4 )alkylcarbonyl, iii) arylsulfonyl such as phenylsulfonyl (—SO 2 Ph), iv) Het-ALK-C(O)— with Het representing a heterocycloalkyl group which is optionally substituted and ALK represents a (C 1 -C 6 )alkylene group optionally substituted with one or more hydroxyl or (di)(hydroxy)(C 1 -C 4 )(alkyl)amino groups; v) optionally substituted aryl, vi) optionally substituted aryl(C 1 -C 4 )alkyl, viii) optionally substituted C 1 -C 20  alkyl, optionally interrupted with one or more heteroatoms and/or with one or more groups comprising at least one heteroatom; 
 a group of formula (a) below:
   —N(R 7 )—X 1 —W 1   (a)
 
 
 wherein in formula (a): 
 R 7  represents a hydrogen or a C 1 -C 4  alkyl radical, 
 X 1  represents a divalent radical chosen from C 1 -C 20  alkylene optionally interrupted with one or more heteroatoms or groups chosen from oxygen, nitrogen, sulfur, CO, SO, SO 2 , arylene, or combinations thereof; 
 W 1  represents a cationic radical chosen from: 
 
         
       
       
         
           
           
               
               
           
         
         
           
             with R 8 , R 9 , R 10  and R 11 , which may be identical or different, representing a C 1 -C 6  alkyl group, a benzyl radical, a C 1 -C 6  alkyl sulfonate radical; the radicals R 8  and R 9  optionally form, with the nitrogen atom to which they are attached, a saturated or unsaturated, optionally substituted 5- to 7-membered heterocycle, optionally comprising another non-nitrogen heteroatom; 
           
           n is an integer ranging from 1 to 3; 
           T 1  represents a linear or branched divalent hydrocarbon-based chain comprising from 1 to 20 carbon atoms, optionally interrupted with one or more heteroatoms or groups, or combinations thereof, chosen from oxygen, sulfur, N(R b ), C(O), —N + (R 8 )(R 9 )-An, optionally cationic and optionally substituted heteroaryl, An with R 8  and R 9 , which may be identical or different, represent a C 1 -C 6  alkyl radical; R b  representing a hydrogen atom or a (hydroxy)(C 1 -C 4 )alkyl group; 
              being the part of the bond that is connected to the rest of the molecule; and 
           (b) at least one cationic (poly)methine fluorescent dye; 
         
         wherein:
 the anthraquinone dye(s) of formula (I) comprise at least one radical R 1 , R 3  or R 4 , other than a hydrogen atom, and the anthraquinone dye(s) of formula (II) comprise at least one radical R′ 1 , R′ 2 , R′ 3  or R′ 4  other than a hydrogen atom; 
 (a) the anthraquinone dye(s) of formula (I) or (II) and (b) the fluorescent dye(s) are applied to said keratin fibers together or sequentially; and 
 when the compounds of formula (I) or (II) are cationic and comprise a sulfonate group, then M +  and An are optionally absent to ensure the electrical neutrality of said molecule. 
 
       
     
     
         29 . The process according to  claim 28 , wherein the at least one anthraquinone dye of formulae (I) and/or (II) absorbs light in the blue-violet range. 
     
     
         30 . The process according to  claim 28 , wherein the at least one anthraquinone is chosen from compounds of formula (I) wherein n is equal to 0 or 1. 
     
     
         31 . The process according to  claim 28 , wherein the at least one anthraquinone dye is chosen from compounds of formula (I), wherein R 1  and R 3  represent an atom or group chosen from i) hydroxyl, ii) arylamino or aryl(C 1 -C 6 )alkylamino with the aryl group representing an optionally substituted aryl group, iii) (di)(hydroxy)(C 1 -C 6 )(alkyl)amino, iv) (di)(C 1 -C 4 )(alkyl)amino(C 1 -C 6 )alkylamino, v) (C 1 -C 4 )alkylcarbonylamino(C 1 -C 6 )alkylamino, vi) arylsulfonylamino with the aryl group optionally substituted, vii) (di)halo(C 1 -C 4 )alkylamino, viii) (di)(hydroxy)(C 1 -C 4 )alkoxy(C 1 -C 4 )alkylamino, ix) (di)tri(C 1 -C 4 )alkylammonium(C 1 -C 6 )alkylamino, x) heterocycloalkyl(C 1 -C 6 )alkylamino, heterocycloalkyl(C 1 -C 4 )alkylcarbonylamino, heterocycloalkyl(C 1 -C 4 )alkylamino(C 1 -C 4 )alkylcarbonylamino or heterocycloalkyl(C 1 -C 4 )alkylcarbonylamino(C 1 -C 6 )alkylamino, wherein the heterocycloalkyl is optionally cationic, xi) halo(C 1 -C 4 )alkylcarbonylamino(C 1 -C 6 )alkylamino, xii) hydroxysulfonyl, xiii) halo, xiv) heteroaryl(C 1 -C 6 )alkylamino, wherein the heteroaryl is optionally cationic and/or substituted, xv) heteroaryl(C 1 -C 4 )alkylcarbonylamino(C 1 -C 6 )alkylamino, wherein the heteroaryl is optionally cationic and/or substituted, xvi) R′R″N— with R′ and R″, which may be identical or different, representing a (halo)(C 1 -C 4 )alkylcarbonylamino(C 1 -C 6 )alkyl group, a (halo)(C 1 -C 4 )alkylaminocarbonyl (C 1 -C 6 )alkyl group, a (halo)(C 1 -C 4 )alkylcarbonyl group, a carboxy(C 1 -C 6 )alkyl group, the alkyl group possibly being substituted with one or more amino or hydroxyl groups, a (poly)hydroxy(C 1 -C 6 )alkyl group, xvii) (C 1 -C 16 )alkylaminocarbonylamino(C 1 -C 6 )alkylamino, xviii) formylamino(C 1 -C 6 )alkylamino, xix) (hydroxy)(C 1 -C 6 )alkylamino(C 1 -C 6 )alkylamino, xix) hydroxysulfonyl(C 1 -C 6 )alkylamino(C 1 -C 6 )alkylamino, xx) sulfonato(C 1 -C 6 )alkyl(di(C 1 -C 4 )alkyl)ammonium(C 1 -C 6 )alkylamino, xxi) hydroxysulfonyl(C 1 -C 6 )alkoxy(C 1 -C 6 )alkylamino, xxi) heteroaryl(C 1 -C 4 )alkylcarbonylamino, wherein the heteroaryl is optionally cationic and/or substituted, xxii) heterocycloalkyl(C 1 -C 4 )alkylcarbonylamino, wherein the heterocycloalkyl is optionally cationic and/or substituted, xxiii) (di)(C 1 -C 4 )(alkyl)amino(C 1 -C 6 )alkylamino, wherein the (C 1 -C 6 )alkyl group is optionally substituted with one or more hydroxyl groups, xxiv) heterocycloalkylamino(C 1 -C 6 )alkylamino or heterocycloalkylamino, wherein the heterocycloalkyl is optionally cationic and/or substituted, xxv) heteroarylalkylamino(C 1 -C 6 )alkylamino or heteroarylalkylamino, wherein the heteroaryl is optionally cationic and/or substituted, xxvi) tri(C 1 -C 6 )alkylammonium(C 1 -C 6 )alkylamino, xxvii) (C 1 -C 4 )alkoxycarbonyl(C 1 -C 6 )alkyl(di(C 1 -C 4 )alkyl)ammonium(C 1 -C 6 )alkylamino, xxviii) carboxylato(C 1 -C 6 )alkyl(di(C 1 -C 4 )alkyl)ammonium(C 1 -C 6 )alkylamino, xxix) carboxy(C 1 -C 6 )alkylamino(C 1 -C 6 )alkylamino, xxx) aryl(C 1 -C 4 )alkyl(di(C 1 -C 4 )alkyl)ammonium(C 1 -C 6 )alkylamino, xxxi) sulfonic SO 3 H or sulfonate SO 3   − , M +  with M +  representing a cationic counterion, xxxii) (C 1 -C 6 )alkyl, xxxiii) hydroxysulfonyl(C 1 -C 4 )amino, xxxiv) phenylsulfonylamino. 
     
     
         32 . The process according to  claim 28 , wherein the at least one anthraquinone dye is chosen from dyes of formula (I), wherein R 2  and R 4 , which may be identical or different, represent a hydrogen atom or a group chosen from:
 hydroxyl,   (di)(C 1 -C 4 )(alkyl)amino,   (C 1 -C 4 )alkoxy, heterocycloalkyl(C 1 -C 6 )alkylamino, wherein the heterocycloalkyl is optionally cationic and/or substituted,   arylamino or aryl(C 1 -C 6 )alkylamino wherein the aryl group is an optionally substituted aryl group,   aryl(C 1 -C 4 )alkyl(di(C 1 -C 4 )alkyl)ammonium(C 1 -C 6 )alkylamino,   (di)(C 1 -C 4 )(alkyl)amino(C 1 -C 6 )alkylamino, or   hydroxy(C 1 -C 4 )(alkyl)amino(C 1 -C 6 )alkylamino.   
     
     
         33 . The process according to  claim 28 , wherein the at least one anthraquinone dye is chosen from dyes of formula (I), and R 2  and R 4  represent a hydrogen atom. 
     
     
         34 . The process according to  claim 28 , wherein the at least one anthraquinone dye of formulae (I) and/or (II) is chosen from dyes of formula (I) with R 2  and R 3  representing a hydrogen atom, and R 1  and R 4  are chosen from:
 halogen,   (di)(C 1 -C 4 )(alkyl)amino,   (C 1 -C 4 )alkylcarbonylamino,   heterocycloalkyl(C 1 -C 6 )alkylamino, heterocycloalkyl(C 1 -C 4 )alkylcarbonylamino or heterocycloalkyl(C 1 -C 4 )alkylamino(C 1 -C 4 )alkylcarbonylamino, wherein the heterocycloalkyl is optionally cationic and/or substituted,   tri(C 1 -C 4 )alkylammonium(C 1 -C 6 )alkylamino,   arylamino or aryl(C 1 -C 6 )alkylamino wherein the aryl group si an optionally substituted aryl group,   (di)(C 1 -C 4 )(alkyl)amino(C 1 -C 6 )alkylamino, or   (C 1 -C 4 )alkylcarbonylamino(C 1 -C 6 )alkylamino.   
     
     
         35 . The process according to  claim 28  wherein the anthraquinone dye(s) of formulae (I) and/or (II) are dyes of formula (I) with R 3  and R 4  representing a hydrogen atom, and R 1  and R 2  are in positions 8 and 1, respectively, and R 1  and R 2  are chosen from:
 (di)(hydroxy)(C 1 -C 4 )(alkyl)amino, 
 (di)(hydroxy)(C 1 -C 4 )(alkyl)amino(C 1 -C 6 )alkylamino, 
 tri(C 1 -C 6 )alkylammonium(C 1 -C 6 )alkylammonium, 
 tri(C 1 -C 6 )alkylammonium(C 1 -C 6 )alkylamino, 
 heterocycloalkyl(C 1 -C 6 )alkylamino, said heterocycloalkyl possibly being optionally cationic and/or substituted especially with one or more (C 1 -C 4 ) alkyl or benzyl groups and 
 arylamino or aryl(C 1 -C 6 )alkylamino with the aryl group representing an optionally substituted aryl group, in particular a phenyl group optionally substituted with one or more groups chosen from (C 1 -C 4 )alkyl, (di)(hydroxy)(C 1 -C 4 )(alkyl)amino, (C 1 -C 4 )alkoxy, tri(C 1 -C 4 )alkylammonium. 
 
     
     
         36 . The process according to  claim 28 , wherein the at least one anthraquinone dye is chosen from dyes of formula (I) with R 1  and R 3  representing a hydrogen atom and n is equal to 2, and R 2  and R 4  are chosen from:
 (C 1 -C 6 )alkyl,   (di)(hydroxy)(C 1 -C 4 )(alkyl)amino,   SO 3 H or SO 3   − M + ,   (di)(hydroxy)(C 1 -C 4 )(alkyl)amino(C 1 -C 6 )alkylamino,   tri(C 1 -C 4 )alkylammonium(C 1 -C 6 )alkylamino, and   heterocycloalkyl(C 1 -C 6 )alkylamino, wherein the heterocycloalkyl si optionally cationic and/or substituted, or   arylamino or aryl(C 1 -C 6 )alkylamino with the aryl group representing an optionally substituted aryl group.   
     
     
         37 . The process according to  claim 28 , wherein the at least one anthraquinone dye is chosen from dyes of formula (II′): 
       
         
           
           
               
               
           
         
       
       wherein X a  represents an N(R a ), R′ 2  and R′ 4  represent a hydrogen atom and; T 1  represents a saturated linear divalent hydrocarbon-based chain comprising from 1 to 20 carbon atoms, optionally interrupted with one or more groups chosen from N(R b ), C(O), —N + (R 8 )(R 9 )-An, cationic heteroaryl, An, or combinations thereof, with R 8  and R 9 , which may be identical or different, representing a C 1 -C 6  alkyl radical; R b  representing a hydrogen atom or a (C 1 -C 4 )alkyl group. 
     
     
         38 . The process according to  claim 37 , wherein the at least one anthraquinone dye is chosen from the dyes of formula (II″): 
       
         
           
           
               
               
           
         
       
     
     
         39 . The process according to  claim 28 , wherein the at least one anthraquinone dye of formulae (I) and/or (II) is chosen from the following compounds, optical isomers thereof, geometrical isomers thereof, tautomers thereof, solvates thereof, or mixtures thereof: 
       
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
         
           
           
               
               
           
         
       
       wherein An, which may be identical or different, represents an anionic counterion chosen from mesylate, tosylate, or halide. 
     
     
         40 . The process according to  claim 28 , wherein the at least one cationic (poly)methine fluorescent dye is chosen from direct dyes chosen from cyanin dyes, styryl/hemicyanin dyes, naphthalimide dyes, or mixtures thereof. 
     
     
         41 . The process according to  claim 28 , wherein the at least one cationic (poly)methine fluorescent dye is chosen from dyes which absorb light in the yellow, orange and red range. 
     
     
         42 . The process according to  claim 28 , wherein the at least one cationic (poly)methine fluorescent dye is chosen from dyes which bear at least one cationic chromophore chosen from formulae (III), (IV), (IIIa), or (IVa) below:
   W + —[C(R c )═C(R d )] m′ —Ar′-(*)Q −   (I)
     Ar—[C(R d )═C(R c )] m′ —W′ + -(*)Q −   (IV),
   
       wherein in formulae (III) and (IV):
 W +  represents a cationic heteroaryl group comprising a quaternary ammonium optionally substituted with one or more (C 1 -C 8 )alkyl groups optionally substituted with one or more hydroxyl groups; 
 W′ +  represents a divalent heteroaryl radical as defined for W + ; 
 Ar represents an aryl group, optionally substituted with i) one or more halogen atoms such as chlorine or fluorine; ii) one or more (C 1 -C 8 )alkyl; iii) one or more hydroxyl groups; iv) one or more (C 1 -C 8 )alkoxy groups; v) one or more hydroxy(C 1 -C 8 )alkyl groups, vi) one or more amino or (di)(C 1 -C 8 )alkylamino groups, vii) with one or more acylamino groups; viii) one or more heterocycloalkyl groups; 
 Ar′ is a divalent aryl radical; 
 m′ represents an integer between 1 and 4 inclusive; 
 R c  and R d , which may be identical or different, represent a hydrogen atom or optionally a substituted (C 1 -C 8 )alkyl, or alternatively R c  is contiguous with W or W′ and/or R d  is contiguous with Ar or Ar′ and form, with the atoms that bear them, a (hetero)cycloalkyl; 
 Q −  is an organic or mineral anionic counterion; 
 (*) represents the part of the fluorescent chromophore that is bonded to the rest of the dye, 
 
       
         
           
           
               
               
           
         
       
       wherein in formulae (IIIa) and (IVa) R e , R f , R g  and R h , which may be identical or different, represent a hydrogen atom or a (C 1 -C 6 )alkyl group which is optionally substituted. 
     
     
         43 . The process according to  claim 28 , wherein the at least one cationic (poly)methine fluorescent dye is chosen from the dyes of formulae (V), (VI), or (VII): 
       
         
           
           
               
               
           
         
       
       organic or mineral acid or base salts thereof, optical isomers, geometrical isomers thereof, tautomers thereof, or solvates thereof; 
       wherein:
 R 1  and R 2 , which may be identical or different, represent a hydrogen atom or a C 1 -C 6  alkyl group; 
 G 1  represents a hydrogen atom or a group chosen from NH 2  and OH; 
 R a , R′ a , R″ a , R′″ a , R b , R′ b , R″ b , and R′″ b , which may be identical or different, represent a) a hydrogen atom, b) a halogen atom, a group chosen from: c) amino, d) (C 1 -C 4 )alkylamino, e) (C 1 -C 4 )dialkylamino, f) cyano, g) carboxyl —C(O)OH or carboxylate —C(O)O − , Q + , h) hydroxy —OH or alkoxide —O − Q + , i) (poly)halo(C 1 -C 6 )alkyl j) acylamino, k) (C 1 -C 6 )alkoxy, l) (C 1 -C 6 )alkylthio, m) (poly)hydroxy(C 2 -C 4 )alkoxy, n) (C 1 -C 6 )alkylcarbonyloxy, o) (C 1 -C 6 )alkoxycarbonyl, p) (C 1 -C 6 )alkylcarbonylamino, q) acylamino, r) carbamoyl, s) (C 1 -C 6 )alkylsulfonylamino, t) aminosulfonyl, u) —SO 3 H or sulfonate —SO 3   − , Q +  or v) (C 1 -C 6 )alkyl optionally substituted with a group chosen from (C 1 -C 6 )alkoxy, hydroxyl, cyano, carboxyl, amino, (di)(C 1 -C 4 )alkylamino, or alternatively the two alkyl radicals borne by the nitrogen atom of the amino group form a 5- to 7-membered heterocycle optionally comprising another nitrogen or non-nitrogen heteroatom; 
 or alternatively two groups R a  and R′ a ; R b  and R′ b , borne by two adjacent carbon atoms, together form a benzo or indeno ring, a fused heterocycloalkyl or fused heteroaryl group; the benzo, indeno, heterocycloalkyl or heteroaryl ring being optionally substituted with a halogen atom, an amino, (C 1 -C 4 )alkylamino, (C 1 -C 4 )dialkylamino, nitro, cyano, carboxyl, hydroxyl or trifluoromethyl group, an acylamino, (C 1 -C 4 )alkoxy (poly)hydroxy(C 1 -C 4 )alkoxy, (C 1 -C 4 )alkylcarbonyloxy, (C 1 -C 4 )alkoxycarbonyl or (C 1 -C 4 )alkylcarbonylamino radical, an acylamino, carbamoyl or alkoxyalkylsulfonylamino radical, an aminosulfonyl radical, or a (C 1 -C 6 )alkyl radical optionally substituted with: a group chosen from (C 1 -C 6 )alkoxy, hydroxyl, cyano, carboxyl, amino, (C 1 -C 4 )alkylamino, or (C 1 -C 4 )dialkylamino, or alternatively the two alkyl radicals borne by the nitrogen atom of the amino group form a 5- to 7-membered heterocycle optionally comprising another nitrogen or non-nitrogen heteroatom; 
 or alternatively, two groups R i  and R a ; and/or a group R′ i  and R′ a  together form a fused (hetero)cycloalkyl; 
 R g  represents a hydrogen atom, a (hetero)aryl(C 1 -C 4 )alkyl group or a (C 1 -C 6 )alkyl group that is optionally substituted; 
 R e  represents a covalent bond, a linear or branched, optionally substituted (C 1 -C 8 )alkylene or (C 2 -C 8 )alkenylene hydrocarbon-based chain 
 R f  represents a hydrogen atom, a (C 1 -C 4 )alkoxy group, an amino group R 3 R 4 N—, a quaternary ammonium group M′, R 3 R 4 R 5 N + — in which R 3 , R 4  and R 5 , which may be identical or different, represent a hydrogen atom or a (C 1 -C 4 )alkyl group or R 3 R 4 N— represents an optionally substituted heteroaryl group, or alternatively M′, R 3 R 4 R 5 N + — represents an optionally substituted cationic heteroaryl group; 
 G represents a group i) —NR c R d , ii) —OR with R representing a) a hydrogen atom, b) an optionally substituted, preferentially unsubstituted (C 1 -C 6 )alkyl group, c) an optionally substituted (hetero)aryl group, d) an optionally substituted (hetero)aryl(C 1 -C 6 )alkyl group such as benzyl, e) optionally substituted (hetero)cycloalkyl group, f) optionally substituted (hetero)cycloalkyl(C 1 -C 6 )alkyl group; 
 
       or alternatively when G represents —NR c R d , two groups R c  and R′ a  and/or R d  and R a  together form a saturated heteroaryl or heterocycle, optionally substituted with one or more (C 1 -C 6 )alkyl groups;
 R c  and R d , which may be identical or different, represent a hydrogen atom or a group chosen from: a) optionally substituted (hetero)aryl, b) optionally substituted (hetero)aryl(C 1 -C 4 )alkyl, c) optionally substituted (hetero)cycloalkyl, d) optionally substituted (hetero)cycloalkyl(C 1 -C 4 )alkyl, f) (C 2 -C 5 )alkyl, or g) (C 1 -C 8 )alkyl which is optionally substituted; 
 
       or alternatively two adjacent radicals R c  and R d  borne by the same nitrogen atom together form an optionally substituted heterocyclic or optionally substituted heteroaryl group;
 R i  and R′ i , which may be identical or different, represent a hydrogen atom or a (C 1 -C 4 )alkyl group; 
 
       
         
           
           
               
               
           
         
          represents a (hetero)aryl group fused to the phenyl ring; or alternatively is absent from the phenyl; 
         m represents an integer between 1 and 18 inclusive; 
         M′ represents an anionic counterion, derived from a salt of an organic or mineral acid, or from an organic or mineral base that ensures the electrical neutrality of the molecule; 
         Q +  represents a cationic counterion, derived from a salt of an organic or mineral acid, or from an organic or mineral base that ensures the electrical neutrality of the molecule such as alkali metal, alkaline-earth metal or ammonium; 
       
       wherein when the molecule comprises a carboxylate, sulfonate or alkoxide group, then M′ and Q +  may be absent to ensure the electrical neutrality of said molecule. 
     
     
         44 . The process according to  claim 28 , wherein the at least one cationic (poly)methine fluorescent dye is chosen from styryl dyes of formula (VIII) below: 
       
         
           
           
               
               
           
         
       
       organic or mineral acid or base salts thereof, optical isomers thereof, geometrical isomers thereof, tautomers thereof, or solvates thereof; 
       wherein
 R 1  and R 2 , which may be identical or different, represent a hydrogen atom; 
 R i  and R i′ , which may be identical or different, represent a hydrogen atom or a (C 1 -C 4 )alkyl group; 
 R a , R′ a  and R″ a , which may be identical or different, represent a hydrogen atom, a halogen atom, or an —OH, —O − Q + , (C 1 -C 6 )alkoxy, nitro, or cyano group, wherein Q +  represents a cationic counterion, derived from a salt of an organic or mineral acid, or from an organic or mineral base that ensures the electrical neutrality of the molecule; 
 R b , R′ b  and R″ b , which may be identical or different, represent a hydrogen atom or a (C 1 -C 6 )alkyl group; 
 or alternatively two contiguous radicals R b  and R′ b  form, together with the carbon atoms that bear them, a benzo group that is condensed or fused to the pyridinium group, said benzo group optionally substituted; 
 G represents a group —NR c R d  or (C 1 -C 6 )alkoxy group which is optionally substituted; 
 G 1  represents a hydrogen atom or an OH or NH 2  group; 
 R i  and R′ i , which may be identical or different, represent a hydrogen atom or a (C 1 -C 4 )alkyl group; 
 
       
         
           
           
               
               
           
         
          represents an aryl or heteroaryl group fused to the phenyl ring; or alternatively is absent from the phenyl ring; 
         m represents an integer between 1 and 18 inclusive; 
         R c  and R d , which may be identical or different, represent a hydrogen atom, a (C 2 -C 4 )alkyl group or a substituted (C 1 -C 8 )alkyl group; and 
         M′ represents an anionic counterion, derived from a salt of an organic or mineral acid, or from an organic or mineral base that ensures the electrical neutrality of the molecule; 
       
       wherein when the molecule comprises an alkoxide group, then M′ and Q +  are optionally absent to ensure the electrical neutrality of said molecule. 
     
     
         45 . The process according to  claim 28 , wherein the at least one cationic (poly)methine fluorescent dye is chosen from the dyes of the compounds of formulae (X), (XI), (XII), or (XIII) below: 
       
         
           
           
               
               
           
         
       
       organic or mineral acid salts thereof, optical isomers thereof, geometrical isomers thereof, tautomers thereof, or solvates thereof; 
       wherein in formula (X), (XI), (XIII), or (XIII):
 R 1 , R 2 , R 3  and R 4 , which may be identical or different, represent a hydrogen atom or a (C 1 -C 6 )alkyl group; 
 R 5 , R 6 , R 7 , R 8  and R 9 , which may be identical or different, represent i) a hydrogen atom or ii) a halogen atom, iii) a group OR in which R represents a hydrogen atom or Q +  represents a cationic counterion, derived from a salt of an organic or mineral acid, or from an organic or mineral base that ensures the electrical neutrality of the molecule, or a (C 1 -C 3 )alkyl group, iv) aryl, v) an aryl(C 1 -C 3 )alkyl group, vi) cyano, vii) nitro, viii) (C 1 -C 3 )alkylthio, ix) amino NR 10 R 11  with R 10  and R 11 , which may be identical or different, representing a) a hydrogen atom, b) a (C 2 -C 4 )alkyl group or c) a substituted (C 1 -C 8 )alkyl group:
 cyano, 
 (C 1 -C 3 )alkoxy, 
 hydroxyl, and 
 (C 1 -C 3 )alkylcarbonyl; 
 
 m represents an integer between 1 and 18 inclusive; 
 M′ represents an anionic counterion, derived from a salt of an organic or mineral acid, or from an organic or mineral base that ensures the electrical neutrality of the molecule; 
 
       wherein when the molecule comprises an alkoxide group, then M′ and Q +  are optionally absent to ensure the electrical neutrality of the molecule. 
     
     
         46 . The process according to  claim 28 , wherein the at least one cationic (poly)methine fluorescent dye is chosen from those of formulae (XIV) or (XV) below: 
       
         
           
           
               
               
           
         
       
       wherein:
 R 5  and R 8 , which may be identical or different, represent a hydrogen atom or a (C 1 -C 4 )alkoxy group; 
 R 7  represents a (C 1 -C 4 )alkoxy group or NR 10 R 11  with R 10  and R 11 , which may be identical or different, representing a) a hydrogen atom, or b) a (C 1 -C 8 )alkyl group optionally substituted with one or more groups chosen from i) hydroxyl, ii) R—Z—C(X)—Y— with X, Y and Z representing an oxygen or sulfur atom or N(R′), or alternatively X and/or Z represent a bond, R and R′, which may be identical or different, represent a hydrogen atom or a (C 1 -C 6 )alkyl group, iii) sulfonic SO 3 H, iv) sulfonate SO 3   − , Q + , v) carboxylate C(O)O − , Q +  with Q +  representing a cationic counterion; 
 m represents an integer between 1 and 18 inclusive; and 
 M′ represents an anionic counterion, derived from a salt of an organic or mineral acid, or from an organic or mineral base that ensures the electrical neutrality of the molecule; 
 wherein when the molecule comprises an alkoxide group, then M′ and Q +  are optionally absent to ensure the electrical neutrality of said molecule. 
 
     
     
         47 . The process according to  claim 46 , wherein:
 the at least one cationic (poly)methine fluorescent dye is chosen from compounds of formula (X), wherein:   
       
         
           
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                     
                 
                   R 1   
                   R 2   
                   R 3   
                   R 4   
                   R 5   
                   R 6   
                   R 7   
                   R 8   
                   R 9   
                   m 
                 
                     
                 
                     
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   t-Bu 
                   OH 
                   t-Bu 
                   H 
                   5 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   t-Bu 
                   OH 
                   t-Bu 
                   H 
                   5 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   NH 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   NH 2   
                   H 
                   OCH 3   
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   Br 
                   H 
                   5 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OH 
                   OCH 3   
                   H 
                   5 
                 
                   H 
                   H 
                   H 
                   H 
                   Cl 
                   H 
                   OH 
                   H 
                   Cl 
                   5 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   10 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OH 
                   OCH 3   
                   H 
                   10 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   t-Bu 
                   OH 
                   t-Bu 
                   H 
                   10 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   t-Bu 
                   OH 
                   t-Bu 
                   H 
                   10 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 )CH 2 CH 2 OH 
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 3 ) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   n-C 6 H 13   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(n-Bu) 2   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OH 
                   H 
                   H 
                   10 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OC 2 H 5 OH 
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   1 
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                   H 
                   H 
                   benzo 
                   H 
                   H 
                   H 
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   benzo 
                   H 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   H 
                   1 
                 
                   H 
                   H 
                   benzo 
                   H 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   H 
                   1 
                 
                     
                 
             
                
                
                
               
               
                
               
            
             
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
               
            
             
                
                
                
                
               
            
           
         
       
       organic or mineral acid or base salts thereof, optical isomers, geometrical isomers thereof, tautomers thereof, or solvates thereof;
 cationic (poly)methine fluorescent dyes of formula (XI), wherein: 
 
       
         
           
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                     
                 
                   R 1   
                   R 2   
                   R 3   
                   R 4   
                   R 5   
                   R 6   
                   R 7   
                   R 8   
                   R 9   
                   m 
                 
                     
                 
                   CH 3   
                   H 
                   H 
                   H 
                   OH 
                   H 
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 2 —Ph 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   F 
                   H 
                   H 
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OPh 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 2 OAc) 2   
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   OCH 3   
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   CH 3   
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OH 
                   OH 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OH 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(n-butyl) 2   
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   i-propyl 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   Br 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   OCH 3   
                   H 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   C(O)—OH 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   C(O)—OH 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   i-propyl 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 3 )CH 2 CH 2 CN 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 2 Ph 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OPh 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 2 C(O)CH 3 ) 2   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   OCH 3   
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   CH 3   
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 3 )CH 2 CH 2 OH 
                   H 
                   H 
                   2 
                 
                     
                 
             
                
                
                
               
               
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
               
            
           
         
       
       organic or mineral acid or base salts thereof, geometrical isomers thereof, tautomers thereof, or solvates thereof;
 cationic (poly)methine fluorescent dyes of formulae (X′) or (XI′): 
 
       
         
           
           
               
               
           
         
       
       wherein 
       
         
           
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                     
                 
                   R 5   
                   R 7   
                   R 8   
                   m 
                     
                   R 5   
                   R 7   
                   R 8   
                   M 
                 
                     
                 
                     
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   2 
                   and 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   2 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   3 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   3 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   4 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   3 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   5 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   4 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   6 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   5 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   8 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   8 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   10 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   10 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   12 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   12 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   14 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   14 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   16 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   16 
                 
                   H 
                   CH 3 CH 2 N(CH 2 CH 2 OH) 
                   H 
                   2 
                     
                     
                     
                     
                     
                 
                   H 
                   CH 3 CH 2 N(CH 2 CH 2 OH) 
                   H 
                   4 
                     
                     
                     
                     
                     
                 
                     
                 
             
                
                
                
               
               
                
               
            
             
                
                
                
                
                
                
                
                
                
                
                
                
                
               
            
           
         
       
       organic or mineral acid or base salts thereof, geometrical isomers thereof, tautomers thereof, or solvates thereof;
 cationic (poly)methine fluorescent dyes of formula (XII) wherein: 
 
       
         
           
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                     
                 
                   R 1   
                   R 2   
                   R 3   
                   R 4   
                   R 5   
                   R 6   
                   R 7   
                   R 8   
                   R 9   
                   m 
                 
                     
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   OCH 3   
                   H 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   OH 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   H 
                   H 
                   H 
                   F 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   C(O)—OH 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   Isopropyl 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 2 C(O)CH 3 ) 2   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OH 
                   OH 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   CH 3   
                   OCH 2 Ph 
                   CH 3   
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 3 ) 2   
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   Phenyl 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   C(O)—OH 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(n-Butyl) 2   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   3 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   5 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   H 
                   H 
                   3 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 3 ) 2   
                   H 
                   H 
                   3 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   3 
                 
                     
                 
             
                
                
                
               
               
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
               
            
           
         
       
       organic or mineral acid or base salts thereof, optical isomers thereof, geometrical isomers thereof, tautomers thereof, or solvates thereof;
 cationic (poly)methine fluorescent dyes of formula (XIII), wherein: 
 
       
         
           
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                     
                 
                   R 1   
                   R 2   
                   R 3   
                   R 4   
                   R 5   
                   R 6   
                   R 7   
                   R 8   
                   R 9   
                   m 
                 
                     
                 
                   CH 3   
                   H 
                   H 
                   H 
                   OH 
                   H 
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 2 —Ph 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   F 
                   H 
                   H 
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OPh 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 2 OAc) 2   
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   OCH 3   
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   CH 3   
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OH 
                   OH 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OH 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(n-butyl) 2   
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   i-propyl 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   Br 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 3 ) 2   
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   OCH 3   
                   H 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   C(O)—OH 
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   C(O)—OH 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   i-propyl 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 3 )CH 2 CH 2 CN 
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 2 Ph 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OPh 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 2 CH 2 C(O)CH 3 ) 2   
                   H 
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OH 
                   H 
                   OCH 3   
                   H 
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   OCH 3   
                   H 
                   OCH 3   
                   OCH 3   
                   H 
                   6 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   CH 3   
                   H 
                   2 
                 
                   H 
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 3 )CH 2 CH 2 OH 
                   H 
                   H 
                   2 
                 
                   CH 3   
                   H 
                   H 
                   H 
                   H 
                   H 
                   N(CH 3 ) 2   
                   H 
                   H 
                   2 
                 
                     
                 
             
                
                
                
               
               
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
                
               
            
           
         
       
       organic or mineral acid or base salts thereof, geometrical isomers thereof, tautomers thereof, or the solvates thereof;
 cationic (poly)methine fluorescent dyes of formulae (XII′) or (XIII′) below: 
 
       
         
           
           
               
               
           
         
       
       wherein: 
       
         
           
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                     
                 
                   R 5   
                   R 7   
                   R 8   
                   m 
                     
                   R 5   
                   R 7   
                   R 8   
                   m 
                 
                     
                 
                     
                 
                 
                 
                 
                 
                 
                 
                 
                 
                 
               
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   2 
                   and 
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   2 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   3 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   3 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   4 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   3 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   5 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   4 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   6 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   5 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   8 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   8 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   10 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   10 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   12 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   12 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   14 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   14 
                 
                   H 
                   N(CH 2 CH 2 OH) 2   
                   H 
                   16 
                     
                   OCH 3   
                   OCH 3   
                   OCH 3   
                   16 
                 
                     
                 
             
                
                
                
               
               
                
               
            
             
                
                
                
                
                
                
                
                
                
                
                
               
            
           
         
       
       organic or mineral acid or base salts thereof, geometrical isomers thereof, tautomers thereof, or solvates thereof;
 cationic (poly)methine fluorescent dyes chosen from the following compounds: 
 
       
         
           
           
               
               
           
         
       
       organic or mineral acid or base salts thereof, geometrical isomers thereof, tautomers thereof, or the solvates thereof. 
     
     
         48 . The process according to  claim 28 , wherein the process further comprises applying to said keratin fibers a cosmetic composition comprising c) one or more reducing agents. 
     
     
         49 . The process according to  claim 28 , wherein the process does not use any reducing agent. 
     
     
         50 . The process according to  claim 28 , wherein the at least one anthraquinone compound and the at least one cationic (poly)methine fluorescent direct dye are applied together to the keratin fibers. 
     
     
         51 . The process according to  claim 28 , wherein the process comprises at least two successive steps:
 a step of applying to the keratin fibers a cosmetic composition comprising (b) at least one cationic (poly)methine fluorescent dye, followed by,   a step of applying to the keratin fibers a cosmetic composition comprising (a) at least one or more anthraquinone dye of formula (I) and/or (II).   
     
     
         52 . The process according to  claim 28 , wherein the process comprises at least two successive steps:
 a step of applying to the fibers a cosmetic composition comprising (a) at least one anthraquinone dye of formula (I) and/or (II), followed by   a step of applying to the keratin fibers a cosmetic composition comprising (b) at least one cationic (poly)methine fluorescent dye.   
     
     
         53 . The process according to  claim 28 , wherein the pH of the cosmetic composition is between 6 and 11 inclusive. 
     
     
         54 . A cosmetic composition comprising (a) at least one anthraquinone dye chosen from the compounds of formulae (I) and/or (II) below, optical isomers thereof, geometrical isomers thereof, tautomers thereof, solvates thereof, or mixtures thereof: 
       
         
           
           
               
               
           
         
       
       wherein in formula (I) and/or (II):
 X a , which may be identical or different, represents a bond, a heteroatom or a group chosen from an oxygen or sulfur atom, N(R a ), CO, SO, SO 2 , or combinations thereof, with R a  representing a hydrogen atom or a (C 1 -C 6 )alkyl group optionally substituted with one or more hydroxyl groups; 
 Y represents: i) a hydrogen atom; ii) an alkali metal; iii) an alkaline-earth metal; iv) an ammonium group: N + R a R b R g R d  or a phosphonium group: P + R a R b R g R d  with R a R b , R g  and R d , which may be identical or different, representing a hydrogen atom or a (C 1 -C 4 )alkyl group; or v) a thiol-function protecting group; or vi) the group (III) below: 
 
       
         
           
           
               
               
           
         
         R 1 , R 2 , R 3 , R 4 , R′ 1 , R′ 2 , R′ 3  and R′ 4 , which may be identical or different, represent an atom or a group chosen from:
 hydrogen; 
 halogen such as bromine and chlorine, 
 hydroxyl, 
 C 1 -C 4  alkoxy, 
 hydroxysulfonyl (—SO 3 H) or sulfonate (—SO 3   − , M + ), with M +  representing a cationic counterion; 
 optionally substituted C 1 -C 6  alkyl, 
 —NR 5 R 6  in which R 5  and R 6 , which may be identical or different, represent an atom or radical chosen from: i) hydrogen, ii) (C 1 -C 4 )alkylcarbonyl, iii) arylsulfonyl such as phenylsulfonyl (—SO 2 Ph), iv) Het-ALK-C(O)— with Het representing a heterocycloalkyl group which is optionally substituted and ALK represents a (C 1 -C 6 )alkylene group optionally substituted with one or more hydroxyl or (di)(hydroxy)(C 1 -C 4 )(alkyl)amino groups; v) optionally substituted aryl, vi) optionally substituted aryl(C 1 -C 4 )alkyl, viii) optionally substituted C 1 -C 20  alkyl, optionally interrupted with one or more heteroatoms and/or with one or more groups comprising at least one heteroatom; 
 a group of formula (a) below:
   —N(R 7 )—X 1 —W 1   (a)
 
 
 wherein in formula (a): 
 R 7  represents a hydrogen or a C 1 -C 4  alkyl radical, 
 X 1  represents a divalent radical chosen from C 1 -C 20  alkylene optionally interrupted with one or more heteroatoms or groups chosen from oxygen, nitrogen, sulfur, CO, SO, SO 2 , arylene, or combinations thereof; 
 W 1  represents a cationic radical chosen from: 
 
       
       
         
           
           
               
               
           
         
         
           with R 8 , R 9 , R 10  and R 11 , which may be identical or different, representing a C 1 -C 6  alkyl group, a benzyl radical, a C 1 -C 6  alkyl sulfonate radical; the radicals R 8  and R 9  optionally form, with the nitrogen atom to which they are attached, a saturated or unsaturated, optionally substituted 5- to 7-membered heterocycle, optionally comprising another non-nitrogen heteroatom; 
         
         n is an integer ranging from 1 to 3; 
         T 1  represents a linear or branched divalent hydrocarbon-based chain comprising from 1 to 20 carbon atoms, optionally interrupted with one or more heteroatoms or groups, or combinations thereof, chosen from oxygen, sulfur, N(R b ), C(O), —N + (R 8 )(R 9 )-An, optionally cationic and optionally substituted heteroaryl, An with R 8  and R 9 , which may be identical or different, represent a C 1 -C 6  alkyl radical; R b  representing a hydrogen atom or a (hydroxy)(C 1 -C 4 )alkyl group; 
            being the part of the bond that is connected to the rest of the molecule; and 
         (b) at least one cationic (poly)methine fluorescent dye.

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